1808 –
Without a previous declaration of war, Russian troops cross the border
to Sweden at Abborfors in eastern Finland, thus beginning the Finnish war, in which Sweden will lose the eastern half of the country (i.e. Finland) to Russia.

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1808 – Without a previous declaration of war, Russian troops cross the border to Sweden at Abborfors in eastern Finland, thus beginning the Finnish war, in which Sweden will lose the eastern half of the country (i.e. Finland) to Russia.